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There are about 1.5 x 109 scrap tires in the world at the moment; this represents a major waste disposal problem. a. If all of these tires were burned with complete efficiency, by how much (in tonnes) would Earth''s current atmospheric load of C02 increase? b. Compare this to the current atmospheric C02 load. Assume rubber has a molecular formula of C200H400 and that each scrap tire weighs 8 kg, has a diameter of 48 cm, and is 85% rubber.
explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. your
A quality control chemist at Dow Chemical tried to determine purity of NaOH using titration.He measured out 0.500 g NaOH sample, and dissolved it in 20 mL water. 31.2 mL of a 0.386 mol/L HCl solution was used to reach the end point.
what are the H3O+ and OH- concentrarions in a 125 mL solution prepared with 0.100 mol pf NaOH and water?
Phosphorus-32 decays by beta emission to form sulfur-32. How many half-lives have passed in the reaction shown here
The overall reaction in the lead storage battery used in your car is Pb (s) + PbO2 (s) + 2 H+ (aq) + 2 HSO4 - (aq) ? 2 PbSO4 (s) + 2 H2O (l) a. For the overall cell reaction
what is the percentage yield if 400 grams of chlorine react with excess potassium bromide to produce 820 grams of bromine
In plating the Zn onto the nail, it required 3.0v. If you were plating Ag onto the nail, do you think that 3.0v will work? If not, should the Ecell be higher or lower. Explain.
Which of the following properties would you expect to be different for the two enantiomers of 2-pentanol? A. boiling point
A 13.386 g aliquot of this solution is then titrated with 0.1052 M HCl. It required 30.21 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
What pH will would measure for these solutions immediately. What would be the pH after the solutions equilibrate with the atmosphere
Helum Gas at a Pressure of 8.2 atm expands in volume from 39.6L to 88.3 L. The temperature is held at 303 K. Compute the work done in Joules
calculate the standard free energy change in kj between br2 and cl- to form br- and cl2 when all components of the
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